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12 <title>ImageMagick: MagickCore, C API for ImageMagick: Read or Write Binary Large OBjects</title>
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145</div>
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147
148</div>
149
150<div class="main">
151
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]152<p class="navigation-index">[<a href="#BlobToImage">BlobToImage</a> &bull; <a href="#FileToImage">FileToImage</a> &bull; <a href="#GetBlobProperties">GetBlobProperties</a> &bull; <a href="#ImageToBlob">ImageToBlob</a> &bull; <a href="#ImageToFile">ImageToFile</a> &bull; <a href="#ImagesToBlob">ImagesToBlob</a> &bull; <a href="#InjectImageBlob">InjectImageBlob</a>]</p>
153
154<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
155_8c.html" target="source" name="BlobToImage">BlobToImage</a></h2>
156<div class="doc-section">
157
158<p>BlobToImage() implements direct to memory image formats. It returns the blob as an image.</p></ol>
159
160<p>The format of the BlobToImage method is:</p>
161
162<pre class="code">
163 Image *BlobToImage(const ImageInfo *image_info,const void *blob,
164 const size_t length,ExceptionInfo *exception)
165</pre>
166
167<p>A description of each parameter follows:</p></ol>
168
169<h5>image_info</h5>
170<ol><p>the image info.</p></ol>
171
172<h5>blob</h5>
173<ol><p>the address of a character stream in one of the image formats understood by ImageMagick.</p></ol>
174
175<h5>length</h5>
176<ol><p>This size_t integer reflects the length in bytes of the blob.</p></ol>
177
178<h5>exception</h5>
179<ol><p>return any errors or warnings in this structure.</p></ol>
180
181 </div>
182<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
183_8c.html" target="source" name="FileToImage">FileToImage</a></h2>
184<div class="doc-section">
185
186<p>FileToImage() write the contents of a file to an image.</p></ol>
187
188<p>The format of the FileToImage method is:</p>
189
190<pre class="code">
191 MagickBooleanType FileToImage(Image *,const char *filename)
192</pre>
193
194<p>A description of each parameter follows:</p></ol>
195
196<h5>image</h5>
197<ol><p>the image.</p></ol>
198
199<h5>filename</h5>
200<ol><p>the filename.</p></ol>
201
202 </div>
203<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
204_8c.html" target="source" name="GetBlobProperties">GetBlobProperties</a></h2>
205<div class="doc-section">
206
207<p>GetBlobProperties() returns information about an image blob.</p></ol>
208
209<p>The format of the GetBlobProperties method is:</p>
210
211<pre class="code">
212 const struct stat *GetBlobProperties(const Image *image)
213</pre>
214
215<p>A description of each parameter follows:</p></ol>
216
217<h5>image</h5>
218<ol><p>the image.</p></ol>
219
220 </div>
221<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
222_8c.html" target="source" name="ImageToBlob">ImageToBlob</a></h2>
223<div class="doc-section">
224
225<p>ImageToBlob() implements direct to memory image formats. It returns the image as a blob and its length. The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG, PNG, etc.)</p></ol>
226
227<p>The format of the ImageToBlob method is:</p>
228
229<pre class="code">
230 unsigned char *ImageToBlob(const ImageInfo *image_info,Image *image,
231 size_t *length,ExceptionInfo *exception)
232</pre>
233
234<p>A description of each parameter follows:</p></ol>
235
236<h5>image_info</h5>
237<ol><p>the image info.</p></ol>
238
239<h5>image</h5>
240<ol><p>the image.</p></ol>
241
242<h5>length</h5>
243<ol><p>This pointer to a size_t integer sets the initial length of the blob. On return, it reflects the actual length of the blob.</p></ol>
244
245<h5>exception</h5>
246<ol><p>return any errors or warnings in this structure.</p></ol>
247
248 </div>
249<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
250_8c.html" target="source" name="ImageToFile">ImageToFile</a></h2>
251<div class="doc-section">
252
253<p>ImageToFile() writes an image to a file. It returns MagickFalse if an error occurs otherwise MagickTrue.</p></ol>
254
255<p>The format of the ImageToFile method is:</p>
256
257<pre class="code">
258 MagickBooleanType ImageToFile(Image *image,char *filename,
259 ExceptionInfo *exception)
260</pre>
261
262<p>A description of each parameter follows:</p></ol>
263
264<h5>image</h5>
265<ol><p>the image.</p></ol>
266
267<h5>filename</h5>
268<ol><p>Write the image to this file.</p></ol>
269
270<h5>exception</h5>
271<ol><p>return any errors or warnings in this structure.</p></ol>
272
273 </div>
274<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
275_8c.html" target="source" name="ImagesToBlob">ImagesToBlob</a></h2>
276<div class="doc-section">
277
278<p>ImagesToBlob() implements direct to memory image formats. It returns the image sequence as a blob and its length. The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG, PNG, etc.)</p></ol>
279
280<p>Note, some image formats do not permit multiple images to the same image stream (e.g. JPEG). in this instance, just the first image of the sequence is returned as a blob.</p></ol>
281
282<p>The format of the ImagesToBlob method is:</p>
283
284<pre class="code">
285 unsigned char *ImagesToBlob(const ImageInfo *image_info,Image *images,
286 size_t *length,ExceptionInfo *exception)
287</pre>
288
289<p>A description of each parameter follows:</p></ol>
290
291<h5>image_info</h5>
292<ol><p>the image info.</p></ol>
293
294<h5>images</h5>
295<ol><p>the image list.</p></ol>
296
297<h5>length</h5>
298<ol><p>This pointer to a size_t integer sets the initial length of the blob. On return, it reflects the actual length of the blob.</p></ol>
299
300<h5>exception</h5>
301<ol><p>return any errors or warnings in this structure.</p></ol>
302
303 </div>
304<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
305_8c.html" target="source" name="InjectImageBlob">InjectImageBlob</a></h2>
306<div class="doc-section">
307
308<p>InjectImageBlob() injects the image with a copy of itself in the specified format (e.g. inject JPEG into a PDF image).</p></ol>
309
310<p>The format of the InjectImageBlob method is:</p>
311
312<pre class="code">
313 MagickBooleanType InjectImageBlob(const ImageInfo *image_info,
314 Image *image,Image *inject_image,const char *format,
315 ExceptionInfo *exception)
316</pre>
317
318<p>A description of each parameter follows:</p></ol>
319
320<h5>image_info</h5>
321<ol><p>the image info..</p></ol>
322
323<h5>image</h5>
324<ol><p>the image.</p></ol>
325
326<h5>inject_image</h5>
327<ol><p>inject into the image stream.</p></ol>
328
329<h5>format</h5>
330<ol><p>the image format.</p></ol>
331
332<h5>exception</h5>
333<ol><p>return any errors or warnings in this structure.</p></ol>
334
335 </div>
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